To enhance the navigation efficiency of inland new-energy ships and reduce energy consumption and emissions,this study investigates wind load coefficients under 13 conditions,combining a wind speed of 2.0 m/s with win...To enhance the navigation efficiency of inland new-energy ships and reduce energy consumption and emissions,this study investigates wind load coefficients under 13 conditions,combining a wind speed of 2.0 m/s with wind direction angles ranging from 0°to 180°in 15°increments.Using Computational Fluid Dynamics(CFD)simulations,the wind load is decomposed into along-course(Cx)and transverse(Cy)components,and their variation with wind direction is systematically analyzed.Results show that Cx is maximal under headwind(0°),decreases approximately following a cosine trend,and reaches its most negative value under tailwind(180°).Cy peaks at crosswind(90°)and exhibits an overall sinusoidal distribution.Certain wind directions produce a compound effect on the hull,particularly when the crosswind angle approaches 90°.Flow analysis reveals that wind generates a high-pressure zone on the windward side and a low-pressure vortex region on the leeward side,inducing unstable forces and increasing energy consumption.Based on the wind pressure distribution,a targeted structural optimization is proposed to mitigate high-pressure resistance.These findings provide a theoretical basis for hull form optimization and energy-efficient ship design.展开更多
基金Shandong Province Key R&D Program(Innovation Capacity Improvement Project for Science,Technology Small,Medium-Sized Enterprises)Project No.:2025TSGCCZZB0679Project ZR2024QE394 supported by Shandong Provincial Natural Science Foundation.
文摘To enhance the navigation efficiency of inland new-energy ships and reduce energy consumption and emissions,this study investigates wind load coefficients under 13 conditions,combining a wind speed of 2.0 m/s with wind direction angles ranging from 0°to 180°in 15°increments.Using Computational Fluid Dynamics(CFD)simulations,the wind load is decomposed into along-course(Cx)and transverse(Cy)components,and their variation with wind direction is systematically analyzed.Results show that Cx is maximal under headwind(0°),decreases approximately following a cosine trend,and reaches its most negative value under tailwind(180°).Cy peaks at crosswind(90°)and exhibits an overall sinusoidal distribution.Certain wind directions produce a compound effect on the hull,particularly when the crosswind angle approaches 90°.Flow analysis reveals that wind generates a high-pressure zone on the windward side and a low-pressure vortex region on the leeward side,inducing unstable forces and increasing energy consumption.Based on the wind pressure distribution,a targeted structural optimization is proposed to mitigate high-pressure resistance.These findings provide a theoretical basis for hull form optimization and energy-efficient ship design.
